The part number **04025K4R7ABSTR\50** refers to a high-frequency Thin Film Capacitor manufactured by **Kyocera AVX**. These components are specifically engineered for RF (Radio Frequency) and microwave applications where precision and stability are critical. --- ### 1. Component Specifications Below is the technical breakdown of the part based on its alphanumeric code: | Feature | Specification | Description | | :--- | :--- | :--- | | **Case Size** | 0402 | Dimensions: 0.04 x 0.02 inches (1.0 x 0.5 mm). | | **Voltage** | 50V | Maximum DC working voltage. | | **Series** | Accu-P® | Ultra-low loss, high-precision thin film technology. | | **Capacitance** | 4.7 pF | 4R7 represents 4.7 picofarads. | | **Tolerance** | ±0.05 pF | Code 'A' indicates ultra-tight tolerance. | | **Termination** | Sn (Tin) | Standard "T" suffix for lead-free solderability. | | **Packaging** | T&R (500) | 7" Reel, typically in quantities of 500 (per the \50 suffix). | --- ### 2. Key Technical Characteristics #### Thin Film Technology Unlike standard multilayer ceramic capacitors (MLCCs), this part uses **Thin Film** deposition. This results in: * **High Q Factor:** Extremely low energy loss at high frequencies. * **Low ESR/ESL:** Minimal Equivalent Series Resistance and Inductance. * **High SRF:** High Self-Resonant Frequency, making it ideal for GHz-range applications. #### Precision Performance The "A" tolerance rating ($\pm 0.05\text{ pF}$) is exceptionally tight. This is necessary for circuits where even a slight deviation in capacitance would shift the center frequency of a filter or the timing of an oscillator. --- ### 3. Common Applications Due to its high stability and low noise profile, this part is used in: * **5G/L-Band Infrastructure:** Base station power amplifiers. * **Satellite Communications:** Signal processing units. * **Matching Networks:** Impedance matching for RF antennas. * **VCOs:** Voltage Controlled Oscillators for frequency synthesis. --- ### 4. Footprint/Land Pattern (0402 Metric 1005) When designing a PCB for this part, use the following standard dimensions: ```markdown Dimension Value (mm) -------------------------- Length (L) 1.00 ± 0.10 Width (W) 0.50 ± 0.10 Thickness (T) 0.40 ± 0.10 Termination (t) 0.20 ± 0.10 ```